Power operator for typewriters and the like



0d.- 15, 1929. A. A; E GLI POWER orsnuoar'on TYPEWRITERS AND THE LIKE 2 sheets-sheet 1 Filed April 12. 1926 Fly. 3,

A. A. EGLI Oct, 15, 1929.-

POWER OPERATOR FOR TYPEWRITERS AND THE LIKE 'l atented Oct. 15, 1929' v UNITED. STA ES 7 of rest.

P NT, QFFICE,

narrow nueus'r EGLI, or HAMBURG, GERMAN nssrenon' 'ro 'r nn rum CHOGOLA'J. momma HOLDING co. AKTIENGESELLSCHAFT, or scnnrrnnusmr, SWITZERLAND POWER OPERATOR FOR TYTEW RITERS AND THE LIKE Application filed April 12, 1926, Serial No. 101,385, and in Germany April23, 1925.

The invention relates to improvements in or modifications of the key-controlled driving mechanism for typewriters, type-setting machines or the like,.claimed in my U. S. A. Patent 1,652,430, and consists firstl inthe fact that in order to eliminate the -shaped operable members or connecting rods for the cams or eccentrics illustrated in the constructional example of the main patent a pivoted yoke or cam carrier is formed which acts on the connecting rod, preferably on the end thereof. The'pivoted yoke or cam carrier in this case preferably carries both the locking device and, if desired, the spring for .holding the eccentric or cam in the position The pivoted yoke or cam carrier preferably receives its rearward movement from the connectingrod and is limited in its rearward movement by 'a .stop. The

movement of the striker or lever acting on the lock' and the eccentric or cam is preferably limited by adjustable stops.) This limitation is preferably effected by means of eccentrics, which may be common to a row wherein of keys. According to the invention the keys are preferably supported in such a way that each 'key is mounted on a rotatable tube, a series of which are pushed telescopically one into the other. The invention is'illustrated by waytof example in the accompanying drawing,

side elevation a key Figure 1- shows in with its associated eccentric and connecting '35 rod, Y

liigure 2 is a plan of part of the keyboard,

Figure 3 is afront elevation. of' part of the keyboard.

In-the drawing, 1 denotes a key, the lever 19 of which is connected with a striker or .push' lever 2, which is held and accurately guided b a. lever 13. The push lever 2 is conne'cte at one endwith a spring 3, while the otherend faces a locking pawl 4. The pawl 4 prevents an eccentric disc or cam 5 from rotating in the direction of the'arrow a. V6 is a continuously rotating roller, motor-driven or. otherwise mechanically actuated, whichrotates in the. direction of thearrow 1) indicated in Figure 1.- 7 is a pivoted yoke or cam carrier in which the eccentric or cam is held. 'Th1s'-'pivoted yoke or cam carrler embracesthe free end of a connecting rod 8, but is not positively connectedto this rod. The rod 8 is adapted,

with the'help of projections 18, to release a way that in the position of rest the free lever arm remote from the spring 3 engages by a projection in a notch in the eccentric or cam 5 and that the tip of this lever lies close in front of the pawl 4. l

The pawl 4 is oscillatably supported in the pivoted eccentric yoke or cam carrier 7 and locks the eccentric or cam 5 in a position in which it does not touch the roller 6. It is subjected to the action of a spring 9, which is likewise secured in the eccentric pivoted yoke. --The pivoted yoke is held by a buffer 16 in such a way that no undesiredcontactof the eccentric" 5 with the rotating yoke a short distance towards the right (Figure 1). The latter presses the connecting rod 4 48, which is guided in a rake 10, in the direction of the small arrow 0 towards the right,

and. thereby causes the release of the desired movement of themachine. f

, After a com lete revolutionthe pawl 4. known until it strikes against the cushioning rail 17', which, being constructed as a rake,

A eccentric -5 is again caug t in a known manner by the The push lever 2 yields upwards as also serves it as a guide. Theecc'entric now 7 remains inoperative iintil the key is released. and -1s'aga1n"struck..' The connecting rod,

8 may be subjected tospring. action from the universal bar, not shown, and may return immediately into the position of rest. The

which protect the interior of the keyboard from dust and the like and carry small supports for holding the keys. 14 is a connecting piece or a carrier for the spindles 12.

- impossible to construct a keyboard free from With a large number of closely crowded keys supported by the method which is usual for example, for line-typewritin machines it is objection.

Figure 2 shows a number of keys and a number of levers 19 secured to a spindle 20 and to tubes 21, 22, 23, 24 and25 which are I mounted telescopically one-in another on the said spindle. a

In this constructional example a key is shown mounted directly on the s indle '20,

and a key 31 on a small tube 21 out e spindle.

20. Similarly a key 33 is shown mounted on the tube 23, and a key 35 onthe tube 25. The tubes 22 and 24 are in ,fact also provided with keys at one'end and with, levers corre-' sponding to the levers 19 at the other end, though these have been omitted in Figure 2 for the purpose of simplifying the drawing.

The spindle 20 is held in sup orts 40, thetube 21 in supports 41,. and so' orth, so that the individual keys and tubes cannot dis- .turb one another. 2 indicates the centre of the machine. The arrangement is repeated symmetrically to right and left ofthe centre in seven rows of keys on each side rising step-wise one above the other so that there are in all fourteengroups like Figure 2, that is, eighty-four keys.

The supporting of the connecting rods spaced widely away from one'another, as is rendered possible by this keyboard, has also other advantages, not furtherdiscu'ssed here.

I claim I 1. In a machine of the character described, 'a lurality of keys, a continuouslyrotating ro ler, a plurality of rotatable and arrestable cams each adapted to be brought into contactwith'said roller, a plurality of movable detents each adapted to engage a cam for positively preventing it from rotating and to be moved out of engagement with said cam by means of a said key, and a plurality of pivotable cam carriers eachcarrying a rotatable The key 1.is guided in slotted plates 15 The dotted line in Figure 7 depressed.

camby means of which it is adapted to be:

be swung, and a plurality of members each adapted to be moved by a cam carrier.

2. In a machine according to claim 1, the

said members being each adapted to be-moved in a longitudinal direction only by a cam carrier without being positively connected therewith. i

3. In a machine of the character described,

a ,plurality of keys, a plurality of 'longitudi nally movable members, a continuously rotating roller, a plurality of rotatable and arrestable cams, a plurality of pivotable cam carriers each carrying a rotatable cam by means of which it is adapted to be. swung, each of said cams being adapted .to. be pushed by means of a key in approximately the direction of the movement of the member and to be brought into contact'with said roller without moving the cam carrier, each of said members being adapted to: be cam carrier.

4. In a machine according to claim 1 ,in

which said members are each adapted to move in a longitudinal direction only by cam carrier without ,being positively connected therewith, said carrier being arranged in; termediate the roller and members, in such moved ---.by a I a manner that on rotation of its cam the carrier pushes againstthe said member. 5. In a machine according to claim v 1 the said members beingnea'ch adapted to move in a longitudinal'directiou only by cam car rier without being positively connected there with, the cam carrier, consisting of-a pivoted one-armed lever. V

6. A machine according to claim 1, "said cam carrier being adapted to 'actuponsaid member only in one direction of movement.

7. In a machine according to claim 1, the said detents-being adapted to lock .the rotatable cams aftereach movement of a said member while thecorresponding keyis depressed.

8. In a machine according to claim 1, the said detents being adapted to lock the rotatablecams after each full rotation of a I i said member while the-corresponding key is 9.-In a machine according to claim 1, the said detents being arranged on the said cam carrier.

10. In a machine as described, a plurality of operable members, a plurality of keys, 2

continuously rotating roller, a plurality of pivotable cam carriers, each carrying a rotatable cam, adapted to-cooperatewith the said roller, when a said key is depressed and to allow its-carrier to move a said operable member, a plurality of movable locking means each adaptedto engage a said cam, 111 combination with each of the said keys means adapted to cooperate with the said locking means so as to release it when the correspond ing key is depressed and while the key is depressed to allow the said locking means to return to its locking position immediately after the locking means has released its cam and before a second movement of the correspondin'gly operable member has occurred.

11. In a machine according to claim 10,- the means cooperating with the locking means being pushing means adapted to-push against the said locking means and to slide off from the said locking means immediately after hav:

ing pushed it. o 12; In a machine according to claim, 10,' the means cooperating with the locking means I being pushing means, adapted to push against 15 the said locking means to slide off from the said locking means immediately after having pushed it and to be adjusted so as to regulate the moment in which thepushing means slide off from the said fdcking means.

. 0 13. In a machine according to claim 10,

the means cooperating with the locking means being adapted to push the said cam.

14. Ina machine according to claim 10,-

a key and means for determining the ulti- 5- mate positions of the said key, the said means being adapted to be adjusted. A 1

' 15. In a machine according to claim 1,

' means controlled by said keys and adapted to'push the said cam for initiating its rotation.

16. Ina machine according to claim 1, one axle for the said plurality of pivotable cam carriers.

In witness whereof I aflix mysignature.

' ARNOLD AUGUST EGLI. 

